US20090125032A1 - Rod removal instrument - Google Patents
Rod removal instrument Download PDFInfo
- Publication number
- US20090125032A1 US20090125032A1 US12/270,505 US27050508A US2009125032A1 US 20090125032 A1 US20090125032 A1 US 20090125032A1 US 27050508 A US27050508 A US 27050508A US 2009125032 A1 US2009125032 A1 US 2009125032A1
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- United States
- Prior art keywords
- rod
- removal instrument
- outer shaft
- inner shaft
- distal end
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7074—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling
- A61B17/7083—Tools for guidance or insertion of tethers, rod-to-anchor connectors, rod-to-rod connectors, or longitudinal elements
- A61B17/7086—Rod reducers, i.e. devices providing a mechanical advantage to allow a user to force a rod into or onto an anchor head other than by means of a rod-to-bone anchor locking element; rod removers
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Neurology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
- Prostheses (AREA)
Abstract
A rod removal instrument for removing a rod from the seat of a vertebral anchor is disclosed. The rod removal instrument comprises an outer shaft connected to an inner shaft. The outer shaft has a rod receiving portion at its distal end. When placed in juxtaposition with the rod, the rod removal instrument is rotated to hook the rod into the rod receiving portion. The inner shaft is then moved distally with respect to the outer shaft to dislodge the rod from the seat and capture it in the rod removal instrument for removal from the surgical site.
Description
- This application claims the benefit of and is a continuation-in-part of U.S. Provisional Patent Application Ser. No. 61/002,985 entitled “Rod removal instrument” filed on Nov. 14, 2007 which is incorporated herein by reference in its entirety.
- The present invention generally relates to medical devices for the spine. In particular, the present invention relates to an instrument for removing a spinal rod from a spinal bone anchor.
- Damage to the spine as a result of advancing age, disease, and injury, has been treated in many instances by fixation or stabilization of vertebrae. Conventional methods of spinal fixation utilize a rigid spinal fixation device to support an injured spinal vertebra relative to an adjacent vertebra and prevent movement of the injured vertebra relative to an adjacent vertebra. One spinal fixation system includes
bone anchor members 10 for fixing to a series of vertebrae of the spine and at least one rigid orsemi-rigid link element 12 designed to interconnect theanchor members 10 as shown inFIGS. 1 and 2 . Typically, the rigid link element is arod 12. An example of one type ofrod 12 is shown inFIG. 3 wherein one end of the rod is partially spherical in shape and includescoupling constructs 20 in the form of small pins for attachment toanchor members 10. The other end of therod 12 ofFIG. 3 is typically oriented to engage the lower adjacent vertebra and may or may not have a spherical end and coupling constructs. - Still referencing
FIGS. 1 and 2 , ananchor member 10 is generally abone screw 14 polyaxially coupled to aseat 18. Theseat 18 typically includes a substantially U-shapedchannel 22 for receiving either end of therod 12 ofFIG. 3 . A closure mechanism (not shown) closes the open end of theseat 18 to lock therod 12 inside. - The
screw 14 is configured to be inserted into the pedicle of avertebra 16 to a predetermined depth and angle. One end of therigid link element 12 is connected to ananchor 10 inserted in the pedicle of an upper vertebra and the other end of therod 12 is connected to ananchor 10 inserted in the pedicle of alower vertebra 16 with some overhang at the caudal end. At least one of the rod ends is connected to an anchor viacoupling constructs 20 which can be of the type shown inFIG. 3 or via other means. Typically tworods 12 and two pairs ofanchors 10 are installed each in the manner described above as shown inFIG. 2 such that two rods are employed to fix twoadjacent vertebrae 16, with onerod 12 positioned on each side of the spinous processes of adjacent vertebrae such that the adjacent vertebrae are supported and held apart in a relatively fixed position by the rods. InFIG. 1 , there are shown tworods 12 and three pairs ofanchors 10 to fix three adjacent vertebrae. Once the system has been assembled and fixed to a series of two or more vertebrae, it constitutes a rigid device substantially preventing the vertebrae from moving relative to one another. This rigidity enables the devices to support all or part of the stresses instead of the stresses being born by the series of damaged vertebra. - Sometimes it is necessary to remove an in-
situ rod 12 for a number of reasons. It may be necessary to reposition a rod or replace a rod with a different rod. Removal of theserods 12 can be difficult given the attendant circumstances which typically involve small percutaneous or minimally invasive openings through which the rod is to be removed and obstructed views of the rod in the surgical site. Furthermore, some rods are securely attached to the seat via various coupling constructs which require additional attention for rod removal purposes. All of these circumstances compound the rod removal process and, therefore, an improved rod removal instrument is required to facilitate and expedite the procedure. - According to one aspect of the invention, a rod removal instrument for removing a rod from a spinal anchor member implanted in a patient's spine is disclosed. The rod removal instrument comprises an outer shaft having a distal end configured to at least partially encompass or cover the spine anchor member. The outer shaft includes a hook portion formed at the distal end configured to remove the rod from the spinal anchor member. In one variation, the hook portion forms a rod entryway interconnected to a rod receiving portion. Both the rod entryway and rod receiving portion are interconnected and sized to receive the rod. In another variation, the rod removal instrument further includes an inner shaft connected to the outer shaft. The inner shaft is located inside the outer shaft and configured to be longitudinally movably with respect to the outer shaft. In another variation, the inner shaft includes a notch formed at the distal end and the inner shaft is connected to the outer shaft such that the notch is displaced a distance from the rod entryway of the outer shaft. The notch is configured to conform to and to partially encompass or cover a rod. The distal end of the inner shaft is configured to retain the rod to the instrument when the inner shaft is moved distally to contact the rod. In another variation, the inner shaft is configured to dislodge the rod from the spinal anchor member when the inner shaft is moved distally to contact the rod. The rod removal instrument further includes an outer shaft handle connected to the proximal end of the outer shaft and an inner shaft handle connected to the proximal end of the inner shaft.
- According to another aspect of the invention, a rod removal instrument for removing a rod connected to an anchor member implanted in a patient's spine is disclosed. The rod removal instrument comprises an elongated member having a distal end configured to percutaneously disconnect a rod from an anchor member to which the rod is connected and hold the rod for removal of the rod from the patient. In one variation, the elongated member is an outer shaft. In another variation, in addition to the outer shaft, the rod further includes an inner shaft located within the outer shaft and configured for relative sliding motion with respect to the outer shaft. In one variation, the inner shaft is configured to hold the rod against the outer shaft when the inner shaft is moved relative to the outer shaft against the rod with a rod properly positioned with respect to the rod removal instrument. In another variation, the relative sliding motion of the inner and outer shafts acts to dislodge a rod from the bone anchor. In another variation, the distal end is configured to be placed over or cover at least a portion of the anchor member. In another variation, the rod removal instrument is configured for insertion into a patient and removal of a rod from a patient through an opening in a patient that is as large as or slightly larger than the outer perimeter of the distal end. In another variation, the distal end defines a rod entryway interconnected with a rod receiving portion and configured such that the rod is insertable into the rod receiving portion through the rod entryway for removal of the rod from the anchor member. In another variation, removal instrument of
claim 14 wherein rod removal instrument is configured such that a rod is insertable into the rod receiving portion after passing a portion of the rod through the rod entryway and turning the distal end relative to the rod to insert the rod into the rod receiving portion. - According to another aspect of the invention, a method for removing a rod from a spinal anchor member having a seat implanted in a patient's spine is disclosed. The method includes the step of providing a rod removal instrument comprising an outer shaft which has a rod receiving portion at the distal end. The distal end of the rod removal instrument is placed in juxtaposition with the rod to be removed. The rod is hooked into the rod receiving portion. The rod is captured inside the rod removal instrument and removed from the anchor member. In another variation, the method further includes the step of creating an opening in a patient that is as large as or slightly larger than the outer shaft and inserting the distal end of the rod removal instrument into the opening. The rod and rod removal instrument are removed from the opening. In another variation, the rod removal instrument includes an inner shaft located within the outer shaft. The inner shaft is moved with respect to the outer shaft such that the rod is captured between the inner shaft and the outer shaft and the inner shaft is held against rod. In one variation, the step of moving the inner shaft with respect to the outer shaft includes disengaging any connecting constructs of the rod from the anchor member. In another variation, the step of hooking the rod into the rod receiving portion includes turning the outer shaft relative to the rod.
- The invention is best understood from the following detailed description when read in conjunction with the accompanying drawings.
-
FIG. 1 illustrates a perspective view of several bone anchors implanted into a portion of a human spine and two rods and a rod removal instrument according to the present invention. -
FIG. 2 illustrates a partial perspective view of two bone anchors without closure mechanisms and a rod connected therebetween implanted in a patient's spine. -
FIG. 3 illustrates a perspective view of a rod. -
FIG. 4 a illustrates a perspective view of a rod removal instrument according to the present invention. -
FIG. 4 b illustrates a front view of a rod removal instrument according to the present invention. -
FIG. 5 illustrates a cross-sectional view taken along line A-A ofFIG. 4 b of a rod removal instrument according to the present invention. -
FIG. 6 a illustrates a front view of an outer shaft of a rod removal instrument according to the present invention. -
FIG. 6 b illustrates a side view of an outer shaft of a rod removal instrument according to the present invention. -
FIG. 6 c illustrates a cross-sectional view taken along line A-A ofFIG. 6 b of an outer shaft of a rod removal instrument according to the present invention. -
FIG. 6 d illustrates an end view of an outer shaft of a rod removal instrument according to the present invention. -
FIG. 7 a illustrates a front view of an inner shaft of a rod removal instrument according to the present invention. -
FIG. 7 b illustrates a cross-sectional view taken along line A-A ofFIG. 7 a of an inner shaft of a rod removal instrument according to the present invention. -
FIG. 8 a illustrates a perspective view of a rod removal instrument according to the present invention in juxtaposition with a portion of a patient's spine with a rod and two bone anchors implanted therein. -
FIG. 8 b illustrates a partial perspective view of a rod removal instrument according to the present invention in juxtaposition with a rod and a bone anchor implanted in a patient's spine. -
FIG. 8 c illustrates a perspective view of a rod removal instrument according to the present invention, two bone anchors and a rod implanted in a patient's spine. -
FIG. 8 d illustrates a partial perspective view of a rod removal instrument according to the present invention in juxtaposition with a rod and a bone anchor implanted in a patient's spine. -
FIG. 8 e illustrates a front view of a rod removal instrument according to the present invention connected to a rod in juxtaposition to a bone anchor. -
FIG. 8 f illustrates a front view of a rod removal instrument according to the present invention. - Referring now to
FIGS. 1 , 4 a, 4 b and 5 there is shown arod removal instrument 30 according to the present invention. Therod removal instrument 30 includes anouter shaft 32 connected to an outer shaft handle 34 by afirst pin 40 or other connecting means. Therod removal instrument 30 further includes aninner shaft 36 connected to an inner shaft handle 38 by asecond pin 42 or other connecting means. Theinner shaft 36 is disposed inside theouter shaft 32 and longitudinally movable with respect to theouter shaft 32. Aspring 44 is located between the inner andouter shafts inner shaft 36 with respect to theouter shaft 32. Referring now toFIGS. 6 a-6 d, there is shown theouter shaft 32 of therod removal instrument 30 according to the present invention. Theouter shaft 32 is tubular in shape and includes arod hook 46 at thedistal end 48. Therod hook 46 forms arod receiving portion 50 clearly seen inFIG. 6 b. Therod receiving portion 50 is oriented approximately 8 degrees with respect to the transverse axis of theouter shaft 32 as shown inFIG. 6 b and extends through theouter shaft 32. Therod receiving portion 50 is sized to receive arod 12. - The
rod hook 46 also forms arod entryway 52 clearly seen inFIGS. 6 a and 6 d. Therod entryway 52 is interconnected with therod receiving portion 50. Therod entryway 52 is sized to allow arod 12 to pass therethrough. Therod hook 46 includes two substantiallycircumferential prongs outer shaft 32 to form the gap of therod entryway 52. Theprongs longitudinal axis 56 of theouter shaft 32. The proximal surface of theprongs rod receiving portion 50. The proximal surface of theprongs rod receiving portion 50. Theouter surface 68 of theprongs FIG. 6 c. Theouter surface 68 of theprongs rod removal instrument 30 and ananchor member 10 when theinstrument 30 is inserted into the patient. For example, as theinstrument 30 is inserted into the patient over ananchor member 10, the angledouter surface 68 plows tissue away from theanchor member 10. Thedistal end 48 of theouter shaft 32 is sized to at least partially encompass ananchor member 10. In particular, thedistal end 48 of theouter shaft 32 is sized to least partially and circumferentially encompass or cover theseat 18 of theanchor member 10. Therod receiving portion 50 is configured such that when connected to aseat 18 of ananchor member 10, theprongs rod 12 with therod 12 being captured within therod receiving portion 50. The use of therod removal instrument 30 will be described in greater detail below. - Turning now to
FIGS. 7 a and 7 b, there is shown aninner shaft 36 according to the present invention. Theinner shaft 36 is tubular in shape and is sized to fit concentrically inside theouter shaft 32. Twoslots 58, located directly opposite from one another, are formed in the sidewall of theinner shaft 36 for receiving a pin and limiting longitudinal travel of theinner shaft 36 with respect to theouter shaft 32. At thedistal end 60 of theinner shaft 36, anotch 62 is formed. Thenotch 62 is shaped and sized to at least partially encompass or cover arod 12. As shown, thenotch 62 is approximately semi-circular in shape and larger in circumference than the circumference of arod 12. The shape of thenotch 62 need not be semi-circular so long as it substantially corresponds to the shape of therod 12 being removed. Theinner shaft 36 is longer than theouter shaft 32. Theinner shaft 36 further includes ashoulder 64 extending at least partially around the outer surface of theinner shaft 36. - With particular reference back to
FIGS. 4 b and 5, the assembly of therod removal instrument 30 will now be described. Theinner shaft 36 is inserted into the larger central opening of theouter shaft 32. The outer shaft handle 34 is pass over the proximal end of theinner shaft 36 and pressed into location onto theouter shaft 32. The inner shaft handle 38 is attached to theinner shaft 36 at the proximal end of theinner shaft 36 via connecting means such as thesecond pin 42 or press-fit connection. Thespring 44 is then inserted into the central longitudinal opening at thedistal end 60 of theinner shaft 36 and moved to the proximal end. Thespring 44 is compressed and thefirst pin 40 is passed through theouter shaft handle 34,outer shaft 32 andslot 58 of theinner shaft 36 such that a spring bias is established forcing the outer andinner shafts inner shafts spring 44, thedistal end 60 of theinner shaft 36 clears therod hook 46 as shown inFIG. 5 . Therod removal instrument 30 is configured such that thenotch 62 of theinner shaft 36 is not aligned with therod entryway 52 but displaced a distance therefrom, preferably a distance at least equal to the diameter of a rod having a circular cross-section or equivalent width of a rod having a different cross-section. In the variation shown in the figures, thenotch 62 is displaced from therod entryway 52 by approximately 90 degrees. Theinner shaft 36 is longitudinally movable with respect to theouter shaft 32 by a distance approximately equal to the length ofslot 58. When theinner shaft 36 is moved distally with respect to theouter shaft 32, thespring 44 is compressed until thefirst pin 40 abuts the proximal end of theslot 58 at which point thedistal end 60 of theinner shaft 36 is approximately in alignment with thedistal end 48 of theouter shaft 32 and therod receiving portion 50 of theouter shaft 32 is partially closed by thedistal end 60 of theinner shaft 36 leaving only a circular opening sized slightly larger than the arod 12 wherein the circular opening is formed in part by thesemi-circular notch 62 and the distal surface of therod receiving portion 50. Thespring 44 biases theinner shaft 36 proximally relative to theouter shaft 32 when thehandle 38 is released. - Turning now to
FIGS. 8 a-8 f, and with particular reference first toFIG. 8 a, there is shown arod removal instrument 30 located above a spine with twoanchor members 10 implanted inadjacent vertebrae 16. Arod 12 is shown located between the twoanchor members 10 inFIG. 8 a. Eachanchor member 10 includes a screw 14 (partially visible) and aseat 18 having a U-shaped channel. In use, therod removal instrument 30 is placed in juxtaposition with therod 12 such that therod entryway 52 is aligned with therod 12 to allow entry of therod 12 through therod entryway 52 into therod receiving portion 50. Therod removal instrument 30 is positioned over theseat 18 in the direction of the arrow shown inFIG. 8 a. Therod 12 is passed into therod entryway 52 until therod 12 abuts the proximal end of therod receiving portion 50 and therod removal instrument 30 at least partially encompasses or covers theseat 18 as shown inFIG. 8 b. Next, therod removal instrument 30 is rotated in either a clockwise or counterclockwise direction as shown by the arrows inFIG. 8 c to move one of the rod hooks 46 under therod 12 to hook and seat therod 12 inside therod receiving portion 50 as shown in close-up inFIG. 8 d. In the variation shown inFIGS. 8 a-8 f, therod removal instrument 30 is rotated approximately 90 degrees to hook and seat therod 12 inside therod receiving portion 50. The outer shaft handle 34 and the inner shaft handle 38 are squeezed together as shown by the arrows inFIG. 8 e. As the handles are squeezed, the relative motion of the outer andinner shafts inner shaft 36 moving distally with respect to theouter shaft 32. Theinner shaft 36 covers therod 12 from the top and captures therod 12 between thenotch 62 andprongs rod receiving portion 50. As theinner shaft 36 moves distally relative to theouter shaft 32, theinner shaft 36 exerts a force to dislodge therod 12 from theseat 18. For example, if coupling constructs 20 such as thepins 20 shown inFIG. 3 are employed, the pins are urged from their slots to remove therod 12 from theseat 18 as shown inFIG. 8 e. The hookedrod 12 is captured and lifted upwardly and removed from the patient. So long as thehandles rod 12 will not drop out of theinstrument 30. Once clear of the surgical site, therod 12 can be released by releasing thehandles spring 44 in the direction shown by the arrows inFIG. 8 f. As seen inFIG. 8 f, with thehandles inner shaft 36 has moved proximally inside theouter shaft 32 and out of therod receiving portion 50 to clear therod entryway 52 and receivingportion 50 for thenext rod 12 to be removed. - The disclosed devices or any of their components can be made of any biologically adaptable or compatible materials including PEEK, PEK, PAEK, PEKEKK or other polyetherketones. Materials considered acceptable for biological implantation are well known and include, but are not limited to, stainless steel, titanium, tantalum, combination metallic alloys, various plastics, polymers, resins, ceramics, biologically absorbable materials and the like.
- The preceding merely illustrates the principles of the invention. It will be appreciated that those skilled in the art will be able to devise various arrangements which, although not explicitly described or shown herein, embody the principles of the invention and are included within its spirit and scope. Furthermore, all examples and conditional language recited herein are principally intended to aid the reader in understanding the principles of the invention and the concepts contributed by the inventors to furthering the art, and are to be construed as being without limitation to such specifically recited examples and conditions. Moreover, all statements herein reciting principles, aspects, and embodiments of the invention as well as specific examples thereof, are intended to encompass both structural and functional equivalents thereof. Additionally, it is intended that such equivalents include both currently known equivalents and equivalents developed in the future, i.e., any elements developed that perform the same function, regardless of structure. The scope of the present invention, therefore, is not intended to be limited to the exemplary embodiments shown and described herein. Rather, the scope and spirit of present invention is embodied by the appended claims.
Claims (20)
1. A rod removal instrument for removing a rod from a spinal anchor member implanted in a patient's spine; the rod removal instrument comprising:
an outer shaft having a distal end configured to at least partially encompass or cover the spine anchor member; the outer shaft including a hook portion formed at the distal end configured to hook the rod for removal of the rod from the spinal anchor member.
2. The rod removal instrument of claim 1 wherein the hook portion forms a rod entryway and a rod receiving portion; both the rod entryway and rod receiving portion are interconnected and sized to receive the rod.
3. The rod removal instrument of claim 1 further including an inner shaft connected to the outer shaft; the inner shaft being located inside the outer shaft and configured to be longitudinally movably with respect to the outer shaft.
4. The rod removal instrument of claim 3 wherein the inner shaft includes a notch formed at the distal end; the inner shaft being connected to the outer shaft such that the notch is displaced a distance from the rod entryway of the outer shaft; the notch being configured to conform to and to partially encompass or cover a rod.
5. The rod removal instrument of claim 3 wherein the distal end of the inner shaft is configured to retain the rod to the instrument when the inner shaft is moved distally to contact the rod.
6. The rod removal instrument of claim 3 wherein the inner shaft is configured to dislodge the rod from the spinal anchor member when the inner shaft is moved distally to contact the rod.
7. A rod removal instrument for removing a rod connected to an anchor member implanted in a patient's spine; the rod removal instrument comprising:
an elongated member having a distal end configured to percutaneously disconnect a rod from an anchor member to which the rod is connected and hold the rod for removal of the rod from the patient.
8. The rod removal instrument of claim 7 wherein the elongated member is an outer shaft.
9. The rod removal instrument of claim 8 further including an inner shaft located within the outer shaft and configured for relative sliding motion with respect to the outer shaft.
10. The rod removal instrument of claim 9 wherein the inner shaft is configured to hold the rod against the outer shaft when the inner shaft is moved against the rod.
11. The rod removal instrument of claim 9 wherein relative sliding motion of the inner and outer shafts acts to dislodge a rod from the bone anchor.
12. The rod removal instrument of claim 7 wherein the distal end is configured to be placed over or cover at least a portion of the anchor member.
13. The rod removal instrument of claim 7 wherein the rod removal instrument is configured for insertion into a patient and removal of a rod from a patient through an opening in a patient that is as large as or slightly larger than the outer perimeter of the distal end.
14. The rod removal instrument of claim 7 wherein the distal end defines a rod entryway interconnected with a rod receiving portion and configured such that the rod is insertable into the rod receiving portion through the rod entryway for removal of the rod from the anchor member.
15. The rod removal instrument of claim 14 wherein the rod removal instrument is configured such that a rod is insertable into the rod receiving portion after passing a portion of the rod through the rod entryway and turning the distal end relative to the rod to insert the rod into the rod receiving portion.
16. A method for removing a rod from a spinal anchor member having a seat implanted in a patient's spine; the method comprising the steps of:
providing a rod removal instrument comprising an outer shaft; the outer shaft having a rod receiving portion at the distal end;
placing the distal end of the rod removal instrument in juxtaposition with the rod to be removed;
hooking the rod into the rod receiving portion;
capturing the rod inside with the rod removal instrument; and
removing the rod from the anchor member.
17. The method of claim 16 further including the steps of:
creating an opening in a patient that is as large as or slightly larger than the outer shaft;
inserting the distal end of the rod removal instrument into the opening; and
removing the rod and rod removal instrument from the opening.
18. The method of claim 16 further including the steps of:
providing a rod removal instrument comprising an inner shaft located within the outer shaft;
moving the inner shaft with respect to the outer shaft such that the rod is captured between the inner shaft and the outer shaft; and
holding the inner shaft against rod.
19. The method of claim 18 wherein the step of moving the inner shaft with respect to the outer shaft includes disengaging any connecting constructs of the rod from the anchor member.
20. The method of claim 16 wherein the step of hooking the rod receiving portion includes turning the outer shaft relative to the rod.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US12/270,505 US20090125032A1 (en) | 2007-11-14 | 2008-11-13 | Rod removal instrument |
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US298507P | 2007-11-14 | 2007-11-14 | |
US12/270,505 US20090125032A1 (en) | 2007-11-14 | 2008-11-13 | Rod removal instrument |
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US20090125032A1 true US20090125032A1 (en) | 2009-05-14 |
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US12/270,505 Abandoned US20090125032A1 (en) | 2007-11-14 | 2008-11-13 | Rod removal instrument |
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Cited By (16)
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US20090112220A1 (en) * | 2007-10-30 | 2009-04-30 | Kilian Kraus | Manipulating Tool for a Medical Implant, Medical Implant and Kit of Parts Comprising a Manipulating Tool and Implant |
US20110093014A1 (en) * | 2009-10-19 | 2011-04-21 | Zimmer Spine, Inc. | Rod with Removable End and Inserter Therefor |
US8096996B2 (en) | 2007-03-20 | 2012-01-17 | Exactech, Inc. | Rod reducer |
US8226690B2 (en) | 2005-07-22 | 2012-07-24 | The Board Of Trustees Of The Leland Stanford Junior University | Systems and methods for stabilization of bone structures |
US8267969B2 (en) | 2004-10-20 | 2012-09-18 | Exactech, Inc. | Screw systems and methods for use in stabilization of bone structures |
US8523865B2 (en) | 2005-07-22 | 2013-09-03 | Exactech, Inc. | Tissue splitter |
US20140107706A1 (en) * | 2012-10-15 | 2014-04-17 | K2M | Universal rod holder |
US20160128741A1 (en) * | 2010-01-15 | 2016-05-12 | Pioneer Surgical Technology, Inc. | Low Friction Rod Persuader |
US10085778B2 (en) | 2016-03-04 | 2018-10-02 | Spinal Elements, Inc. | Rod reducer instrument for spinal surgery |
CN110381866A (en) * | 2017-03-08 | 2019-10-25 | 美多斯国际有限公司 | Surgery entrance is stablized |
US11317948B2 (en) * | 2014-09-19 | 2022-05-03 | In Queue Innovations, Llc | Fusion systems and methods of assembly and use |
US11439380B2 (en) | 2015-09-04 | 2022-09-13 | Medos International Sarl | Surgical instrument connectors and related methods |
US11559328B2 (en) | 2015-09-04 | 2023-01-24 | Medos International Sarl | Multi-shield spinal access system |
US11672562B2 (en) | 2015-09-04 | 2023-06-13 | Medos International Sarl | Multi-shield spinal access system |
US11712264B2 (en) | 2015-09-04 | 2023-08-01 | Medos International Sarl | Multi-shield spinal access system |
US11744447B2 (en) | 2015-09-04 | 2023-09-05 | Medos International | Surgical visualization systems and related methods |
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CN110381866A (en) * | 2017-03-08 | 2019-10-25 | 美多斯国际有限公司 | Surgery entrance is stablized |
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